And today, a new day of business began, and Chen Xu also saw Alun again.

The mask had been removed by her, and she forgot to take it off yesterday in her joy, and the mask was permanently damaged by a soap soak, and in desperation, she had to appear in her true form.

"Ahem, Aaron, it's hard for you."

When I really saw Aaron appear in front of him shyly, all the words of praise were difficult to use on her, even if she didn't apply powder, this was a peerless pretty face.

Chen Xu thought of how careful she was in the hands of human traffickers, and couldn't help but rejoice in her good luck, and coincidentally brought her back from the sea of suffering.

If it weren't for his old Chen's eyesight, he would have felt that Aaron's temperament was a little different from that of ordinary people, and sure enough, he bought a treasure.

"I'll go and hire a few more reliable subordinates, you won't do such rough work in the future."

Chen Xu said that he would clean up and wipe up the work of cooking in a pot, and the restaurant would be busy all day long, and Chen Xu was reluctant anyway.

"I can do it, and I have suffered all this." Aaron whispered, not wanting his boss to take him lightly.

"It's up to you, when the time comes, you command these subordinates to work, and I won't stop you from doing whatever you want."

Chen Xu knew that it was better to be blocked, and said, now that the business is so good, where is it enough for two people?

Just when he was worried about the matter of the ninety-nine multiplication table, someone from the Qin Wangfu invited him to go to a story, and Chen Xu also remembered that he was worshiped by Li Chengqian and the three of them, and he still hasn't come to teach him, and his heart is also moved.

Just take these three people to test, the three of them are very smart in the history books, and they must not be the same as Zhang Gen's pig.

Chen Xu took a carriage all the way to the Qin Palace, and Xinghuafang said that it was not far from the imperial city, and it was not close to it, and it was still a lot of time wasted.

The key is that Chen Xu found that the speed of the carriage is actually not fast, if it is ridden, it is convenient and fast.

It's a pity that the bicycle came from at this time.

After coming to the Qin Palace, Chen Xu asked Li Er to summon some guards over.

"Master Chen, what does this mean, what are we going to do?" Li Er was very confused, now that the matter of rebuilding the city wall has been basically solved, what needs to be done is to prevent the prince from sabotage, and there is today's incident, he is in a very good mood.

"Didn't I come here to teach Li Chengqian them, you can also take a look on the side." Chen Xu said, Li Chengqian and the three were a little excited.

Master Chen is Master Chen, and before he even started teaching, they felt that he was different from those masters.

And Kong Yingda was also watching silently from the side, he wanted to see what Master Chen was going to do.

Soon a hundred guards were summoned, and they were lined up in front of the crowd.

"The book "Guanzi" mentions that the number of ninety-nine is made in response to the way of heaven, and what I want to teach you today is the ninety-nine multiplication table."

Chen Xu said to the three of them solemnly.

In fact, he also knew that in ancient China, there was already a saying of ninety-nine, and if it was really true, the multiplication tables of later generations were still copied from the ancients, and unlike modern times, the ancient multiplication tables were reversed, from ninety-nine-eighty-one all the way back to two-two-four.

The problem is that the period when the popular Xiao Jiujiu was the Spring and Autumn Period and the Warring States Period, and with the end of that brilliant era, many things were lost, such as this ninety-nine multiplication table is no longer popular among the people, and ordinary people like Zhang Gen have never heard of it.

Li Chengqian and the others were a little ignorant, while Li Er and the others suddenly realized that many of them were familiar with poetry and books, so they were naturally no strangers to this, and they just wanted to see how Chen Xu taught the three of them.

"All of you obey my orders, and stand in two rows and two rows."

Chen Xu spoke, and then automatically a guard walked out, forming a four-person phalanx of two people each.

"This is two two to four, or two to four, or two to four." Chen Xu said.

The three of them nodded, and Li Ke also counted with his fingers, Li Chengqian and Li Tai were both in their chests.

"Three rows, three columns." Chen Xu shouted again, so a total of nine guards came out and lined up in a phalanx.

Chen Xu kept changing the numbers, until "nine rows and seven columns" and "five rows and six columns", etc., Li Chengqian and others deserved to have received Kong Yingda's advice, and they were no strangers to this, and they could learn it as soon as they were in such an intuitive array drill.

And Chen Xu clearly saw on the task panel of the system that the number of people who learned the ninety-nine multiplication table had changed from two to more than twenty!

It is equivalent to saying that many people in the Qin Palace's mansion had not systematically mastered this essentialism before, and with his teaching, a group of people have learned it.

Kong Yingda didn't mean to underestimate Chen Xu, don't look at the ninety-nine multiplication table is simple, but it is not simple to be able to teach it with such surprising thinking.

If Chen Xu can teach every knowledge like this, he can guarantee that Li Chengqian and others will continue to maintain a strong interest in learning, and there is no need to supervise them at all.

"It's too easy, Master Chen, we've already mastered this, is there anything more difficult?"

Li Tai became arrogant, feeling that this ninety-nine multiplication table was too simple, and he now needed to challenge a higher difficulty.

"Huh."

Chen Xu smiled: "You are lined up in twenty rows, twenty columns, you only need one row at a time." ”

The guards began to line up again as he instructed, and finally stood in a right-angled array of two twenty men.

"Then you calculate, if you fill in all the missing things in this formation, how many people will be needed in total?" Chen Xu asked the three of them.

Li Chengqian and the three of them were directly stupid, and hurriedly approached the past, and calculated them with their own methods.

Li Chengqian directly counted them, imagining that these people were all full, and counted them one by one.

Li Tai already had the answer, but at this time he didn't look happy at all, twenty rows and twenty columns are simple, what about twenty-one rows and twenty-one columns......?

He could conclude that Master Chen would definitely ask this question in a while.

Li Ke is thinking about the ninety-nine multiplication table, since two and two get four, then twenty and twenty are multiplied.

Li Er and the others were still very superior in their hearts at the beginning, and Master Chen was only teaching children, and now they are also a little weak-hearted.

They also know that the answer is four hundred, after all, five twenty is one hundred, and twenty can be split into four fives, so naturally it is four hundred, what about twenty-one and twenty-one?

Kong Yingda also frowned, he also thought about twenty-one and twenty-one, after some mental arithmetic, he used the calculation to get the result, could it be that Master Chen wants to teach everyone to use an abacus?

Of course, this is impossible, and the mental arithmetic extended by the calculation chip is naturally impossible, otherwise this is not necessary at all, after all, this difficulty is very high, and the method is already there, practice makes perfect.

As long as you pay attention to concentration and are familiar with the calculation, it can be calculated in a certain amount of time.

Li Tai said sullenly: "The answer is four hundred." ”

Chen Xu smiled: "What about thirty-nine rows and thirty-nine columns?" ”

Good fellow,.

Kong Yingda was scolded in his heart, why wasn't it twenty-one? Twenty-one he used the calculation to calculate it, and the multiplication of the thirty-nine is much more troublesome, he quickly closed his eyes, and hurriedly meditated on the appearance of the calculation chip in his heart again, simulating his finger pulling the abacus on it.

And the others, except for Fang Xuanling, Yu Shinan and others, gave up directly, isn't it good to give me an abacus directly, this feeling, if you want everyone to calculate it directly orally, it's fatal!

The three of them replied honestly: "No." ”